Re: Narrow filter for CW #ubitxcw
Looks like PA1FOX has successfully added a second crystal filter for CW:toggle quoted messageShow quoted text
Perhaps Farhan has done this as well.
A perhaps easier hack is to simply add an audio filter for CW, as many here have done.
Some operators will prefer the narrow crystal filter for CW, as this avoids overloading
the receiver audio pre-amp when a strong nearby signal is present.
Evan's hack: https://groups.io/g/BITX20/message/71042
is well worth trying. I have not tried the KD8CEC firmware, but should be possible
to implement this with a firmware change only, no Nextion display, no hardware mods.
On Mon, Aug 12, 2019 at 06:10 PM, Ashhar Farhan wrote:
The ubitx has an option for narrow band filter. There are pins to install it. The way it works is a bit of a hack :